Jim Moriarty's Vivienne Westwood suitis the only wardrobe piece
to be quoted throughout the entire Sherlock script. During the pool
scene from the third episode of Series 1, 'The Great Game',
Moriarty straightens his jacket and references it,
proclaiming,"Westwood".

The suit itself is a two button classic featuring a skull and
crossbone lining and Vivienne Westwood logo buttons.

"[Moriarty's] suit was Vivienne Westwood. Westwood can be very
extreme but this wasn't. Originally I think in the script it was
another make, but the suit was just perfect for him and the colour
was different and unusual."